接入 Studio 多点标定的会话置零与状态记录

支持显式无载荷置零、处理线程内切换模型及完整标定包快照。shared、界面检查与兼容测试通过；Studio 全量仍有一项回放停止时序测试失败。

apps/studio/tests/test_model_calibration_ui.py

@@ -0,0 +1,36 @@
+"""Unloaded confirmation is separate from reset and model failures stay visible."""
+
+from types import SimpleNamespace
+
+import pytest
+from PySide6.QtWidgets import QMessageBox
+
+from orisys_studio.app_window import StudioMainWindow
+from orisys_studio.ui.toolbar import ToolbarWidget
+
+
+@pytest.mark.parametrize("confirmed", [False, True])
+def test_unloaded_zero_requires_operator_confirmation(monkeypatch, confirmed):
+    requested = []
+    messages = []
+    host = SimpleNamespace(
+        _session_phase="running",
+        _active_worker=SimpleNamespace(request_calibration_zero=lambda: requested.append(True)),
+        statusBar=lambda: SimpleNamespace(showMessage=messages.append))
+    monkeypatch.setattr(QMessageBox, "question", lambda *args: QMessageBox.StandardButton.Yes
+                        if confirmed else QMessageBox.StandardButton.No)
+    StudioMainWindow._on_calibration_zero(host)
+    assert bool(requested) == confirmed
+
+
+def test_model_status_and_zero_control_are_cleared_on_playback(qt_app):
+    toolbar = ToolbarWidget()
+    toolbar.set_reset_enabled(True)
+    toolbar.set_model_calibration_status({"fn": "zero_unavailable"})
+    assert not toolbar.btn_calibration_zero.isHidden()
+    assert "FN" in toolbar.model_state.text()
+    assert toolbar.btn_calibration_zero.isEnabled()
+    toolbar.set_run_role("playback")
+    assert toolbar.btn_calibration_zero.isHidden()
+    assert toolbar.model_state.isHidden()
+    toolbar.close()